ICCT：2025-2035年混合动力汽车技术发展与机遇研究报告（英文版）

In the United States, greenhouse gas (GHG) emission standards have assisted in the proliferation of electric vehicles without requiring GHG emission reductions for each specific powertrain. Indeed, fleet-average emission standards can be met with greatly increased sales of zero-emission vehicles and little or no improvement in the combustion engine-based fleet. In its final rulemaking for model years 2027–2032, the U.S. Environmental Protection Agency projected that its rule could result in a